what is phythagoras theorem? how can it proved? plz answer this questi

1.	what is phythagoras theorem? how can it proved? plz answer this question
Answer» P^2=H^2+B^2or H^2=P^2+B^2 OR B^2=P^2+H^2 Take a triangle ABC right angeled at B . Draw BD perpendicular to AC. 1.prove triangle ABC congruent to triangle BDC.2.By CPCT take BC/AC=BD/BC to get BC^2=BD.AC and mark it as 1.3.similarly prove triangle ABC congruent to triangle BDA to get AB/AD=AC/AB to get AB^2=AD.AC mark it as 2.4. Now add 1 and 2 to get AB^2+BC^2=BD.AC + AD.AC =AC (BD+AD) =AC(AC) =AC^2 Hence proved According to pythagoras theorem ,In a right angled triangle the square of hypotenuse is equal to sum of square of its prependicular and base . i.e. h^2=p^2+b^2

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